Boiler and other furnace.



1A REAGAN. BOILER AND OTHER FURNACE. APPucATIoH man 11111111.1915. RENEwEn DML/1. 1916.

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Patented Jan. 9, E91? J.REAQAN. BOILER AND OTHER FURNACE.

APPLICATION FILED MAY i?. 1915- RENEWED DEC. 4, AS916. 199A l Patented Jan. 9,1917.

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BOILER AND OTHER FURNACE. APPUCATIN min MAY i7, :$15. RENEWED Dec. 4. wie.

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rarer f JEES REAGJ, GF IPHILAIDELPHA, PENNSYLVANIA.

BOILER AND OTHER. RURNACE.

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Appiication led May 17, 19215, Serial No. 28,742.

To all whom t may concern:

Be it known that l, JAMES REAGAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State 'of Pennsylvania, have invented certain new and useful Improvements in Boiler and other Furnaces, of which the following,

is a specification.

My invention relates to boiler and other furnaces, and it is an improvement on the invention revealed in my pending application, Serial #859,070, iiled August 28, 1914.

It consists of means for rendering certain the disruption of the fuel as it passes from the fuel feeder to the grate on which the solid fuel is consumed, so that the radiant heat of the igneous gases in the furnace Will reach the greater portion of the fuel before it is fed to the iinal zone of combustion. This certainty of operation is attained by the use of a step that i` disposed between the fuel feeder and the grate, the effect being to not only disturb the rather compact body of fuel by a change in direction of its flow, but to disturb it by a precipitate change of altitude under the iniuence of gravity, or by some other disturbing factor which will cause the said fuel to open up at the proper place so the smaller or minute portions of it will be subjected to the heat of the furnace and be destructively distilled.

The invention also relatos to a modified means ,for supplying crossing jets of air under a forced draft to a part of thereinbustion zone..

@ther features of the invention will be apparent.

In the drawings-Figure 1 is a vertical longitudinal section of the entire furnace; Figs. 2 and 3 are detail views showing construction of the step-plate section of the grate bars; Fig. 4 is a side elevation of the feed hopper showing the actuating mechanism for the fuel feeder and the grate bars; Fig. 5 is a section through the adjusting mechanism for the feeder on the line b- F ig. 4; Fig. 6 is a section through a portion of the fuel hopper on the line u a., Fig. 4r; Fig. is a. plan view showing hopper and grate sections; S is a transverse sectional view of the grate and its supporting devices; F 9 is a vertical section or part of the grate on the line c c, Fig. 8; Fig. 10 is a partial plan view showing the ash pusher 'Specification of Letters Patent.

Patented Jan.. 9, 19T?.

Renewed December 4, '1916. Serial No. 134,809.

l at the rear of the grate and its relation to adjacent parts of the furnace; Fig. 11 is'a perspective view of the oscillator; Figs. l2 and 13 are views showing separated parts of the head block; Figs. 14 and 15 are Views showing details of the hopper door.

A is the hopper, B the fuel feeder, C the hopper door, D is the air box, E the grate, F the adjustable driving mechanism for the grate bars, G is the adjustable operative mechanism for the fuel feeder, H the rest grate, I the ash pusher, J the head block, and K is the bottom supporting beam.

The hopper, the fuel feeder, the hopper door, the air box, the movable grate, the rest grate, and the bottoni supporting beam are constructed and related to each other in about the same Way as in my application, Serial :ii-859,070, filed August 28, 1914. The hopper door is, however, of somewhat different construction, the same being not only brick-lined but provided with ventilative passages, c, c, for air.

The hopper A is provided with a door a, as shown in Fig. 6, said door being disposed at such angle relative to the furnace as to admit of the introduction of a stoking implement. In the present construction the body e and the perforated step-plate sections e of each grate bar E are united by interlocking lugs e2, e3 as shown'. The in terlocking teeth e4 in the present construction are made separate from the body portion of the grate bar and are longer than in the previous construction. They are secured to the body portion by bolts. The grate sections are also provided with angularly disposed air openings or recesses e5 through which crossed jets of air under forced draft are emitted. Some air under pressure is used instead of air under a natural draft so as to compensate for 'the obstructive effect of the more extensive interlocking teeth. Constructed in this Way the interlocking teeth are not liable to be burned out, but if injured by the heat may be easily removed and replaced by others. Strengthening lugs e are disposed in the angles of the step-plates.

The driving mechanism consists of an eccentric f, a driven member f that is attached to a. grate section, and a notched bar f2 carrying an adjusting nut f6 and with which a pawl f3 engages, the pawl being A while 'the distillation is connected with part by a trunnion f4 carried by the hollow bloei; upon which the pawl is mounted. Byineans of this construction the reciprocations of the` grate .may bejfaried.

The' yadjustable device Gr for driving the coal feeder consists of a headed crank-pin g extending through the link g. This crank-pin is mounted for adjustment in a groove g2 that is associated with the gear g3. A sereniv gt effects the radial adjustment of thecranlcpin so as to vary the oscillations of the fuel feeder. The aforesaid devices are driven by any suitable train of mecha nism.

The ash' pusher l is an oscillatory' device similar in character to the fuel feeder and is operated by rod z', a bell crank z", and a. link 2 that is connected with the general driving mechanism of the furnace. rlhis ash pusher feeds the clinlrer and ashes in the direction of the front of the furnace and besides this7 operates in conjunction with the rest grate support K to fractionate the clinlrers.

The head block d4 is provided With a flange 7" that produces a step between it and the grate over which the fuel may fall, The head block is secured to the frame jg by a flange ja and lingers j4 through which end of the frame bolts y extend.

The furnace may also have a heat absorband radiating Wall L.

In the operation of the furnace the fuel passes from the hopper infineasured quantities, is forced over the head block in a sloiyly moving and undisturbed layer, and thence passes to the grate on ivliich the solid constituents are consumed. The layer of fuel is gently disrupted or opened up as it passes onto the grate, this function being performed by the drop at that point caused by theirather pronounced step produced by the flange i of the head block. The fuel being thus disturbed, substantially all parts thereof are subjected to the action of the radiant heat emanating from the burning' ,frases of the furnace at a time when said fuel. by virtue of its gradual preliminary heating While passing to the head block, is in condition for destructive distillation, which, however, is volumetrically restricted by the smallness of the zone in which it is occurring, this zone being disposed mainly in vicinity of the step j. The result is that,

substantially perfected at this point, the volume of ,frases evolved is onlyflsuch comports with the natural capacity of the furnace as a consumer of gaseous fuel constituents. I am thus enabled not only topcrfect the colfing;F process, but to consume in the furnace the volatile constituents of bituminous fuel Without production of smoke. rllhe process is `generally the saine as that produced in the furnace shown in my earlier appli-cah tion above mentioned, in which however, the means for disrupting the body of fuel at the head of the grate is produced by a. mere difference in the angular relation of the head block and the grate.

Having thus fully described my invention what l claim is l. )i furnace having in combination a fuel feeder delivering to a collins; one and a movable grate of a different leclination, including means for supplyingtairto the fuel, the fuel feeding means being So related to the grate as to admit of a disruption of the body of the fuel as it passes to the grate and stationary means for supporting; the fuel moving through the eoking zone and delivering directly to the grate, whereby disruption of the body of fuel will be localized and destructive distillation thereof, controlled 2. A furnace havingl in combination a fuel feeder delivering to a'- colring zone and a movable grate' of a different declination, in cludingmeans for supplying substantially equal increments of air to the fuel, the fuel feeding means being' so related to the grate as to admit of a disruption of the body of the fuel as it passes to the grate and stationary means for supporting the fuel moving through the coking zone and delivering directly to the `grate, whereby disruption of the body of fuel Will be localized and destructive distillation thereof, controlled.

3. A furnace having in combination a fuel feeder delivering to a coking zone and a movable grate, including means for admittingr air to the fuel, said ate having a declination different from that of the feeder and arranged in stepped relation to said feeder and stationary means for supportina" the fuel moving through the ooking zone and delivering` directly to the grate,v whereby disruption of the body of fuel Will be localized andh destructive distillation thereof. controlled.

4. The combination of furnace and a fuel feeder and a ,fg-rate, the grate having hollow and movable air feeding sections, and means for supplying' air between said sections, the Sca l Ysections having air openings for dire'ei'sing intersectingl streams of air into the fire zone.

5. The combination of a4 furnace, a fuel feeder, and a gi'zite,"the grate having llollow and movable air feedingsections provided with intermeshing lugs there-between and means for supplying air between said the several' sections having air' vsages converging with respectl` to one another or feeding air across thespace between the LI'Si 7.. The combination with a reciproeatory inclined grate having means for 4uniformly supplying to fuel resting thereon, suitable quantities of air, of a fuel feeder, a stational-y head block that is provided withl a downwardly extending liange coperatng with the upper end -of the grate, the construction including a,\coking zone in which the formation of gases occurs principally at the area disposed/along the line of said flange` 8. The combination of`a furnace having 4a coking 'zone an inclined grate, a fuel feeder delivering to the colcing zone and a* stationary fuel support deliveringdirectly to the upper end of the grate, the parts being arranged to4 disrupt the fuel as it passes.

` to the grate lonly alongV a line or narrow tion thereof is exposed to the radiant-l heat' zone extending across the furnace' at the upper end of the grate, whereby a large porof the furnace within a very limited area.

9. The combination of a furnace havingr la @cking` zone and a heat absrbing and radiating Wall, an inclined grate, a fuel feeder ,delivering tothe `oking zone and a station ary fuel support delivering directly tothe upper end of the grate, the parts being arranged to disrupthe fuel as it passes to the grate only along a line or narrow zone extending across the furnae at the upper end of the'grate, whereby a large portion thereof isexposedto the radiant heat from said' the grate, said grate comprislng movable hollw bars formed to direct converging streams of air intoA the dlsrupted fuel over ,the spaces between said bars.

In testimony Whreof aiiiX my signature in the presence of (Wo witnesses.

A JAMES REAGAN.

lVitnesses: A

GEO. S. HEN son,

J. W. CAssm .l 

